Transflective liquid crystal display device and color liquid crystal display device

Abstract

A vertical alignment liquid crystal layer is sealed between a first substrate having a first electrode and a second substrate having a second electrode, each pixel region has a reflective region and a transmissive region, and a gap adjusting section is provided on one of sides of the first substrate and the second substrate which sets a thickness (gap) d of the liquid crystal layer which controls a phase difference of incident light to the liquid crystal layer so that a gap dr in the reflective region is smaller than a gap dt in the transmissive region. An alignment controller which divides alignment of the liquid crystal within a pixel region is provided in the pixel region on at least one of the sides of the first substrate and the second substrate. It is also possible to optimize by changing the gap in red, green, and blue.

1. A liquid crystal display device comprising:
 a plurality of pixels; and 
 vertical alignment liquid crystal which is sealed between a first substrate having a pixel electrode and a second substrate having a common electrode, wherein 
 the pixel electrode has a V-shaped edge; 
 each pixel region comprises an alignment controller which divides an alignment direction of the liquid crystal within the pixel region on at least one of the sides of the first substrate and the second substrate; 
 the alignment controller comprises a first alignment controller which is formed to be bent in a V-shape parallel to the V-shaped edge of the pixel electrode; and a second alignment controller and a third alignment controller which are formed on a line connecting a vertex of the V-shaped edge of the pixel electrode and a vertex of the V-shape of the first alignment controller; 
 the second alignment controller and the third alignment controller are formed on opposite sides with the vertex of the V-shape of the first alignment controller interposed therebetween; 
 the liquid crystal on the side where the second alignment controller is located with respect to the first alignment controller is controlled by the first alignment controller and the second alignment controller; 
 the liquid crystal on the side where the third alignment controller is located with respect to the first alignment controller is controlled by the first alignment controller and the third alignment controller; 
 each of the pixels includes a reflective region and a transmissive region, the reflective region including a gap adjusting section; and 
 the first alignment controller, bent in the V-shape, is located at a boundary between the reflective region and the transmissive region and is formed of an inclined end of the gap adjusting section. 
 
     
     
       2. A liquid crystal display device according to  claim 1 , wherein at least one of the second alignment controller and the third alignment controller is formed at a position dividing a region surrounded by the first alignment controller and the edge of the pixel electrode into equal parts. 
     
     
       3. A liquid crystal display device according to  claim 1 , wherein an angular difference between an alignment direction of the liquid crystal controlled by the first alignment controller and an alignment direction of the liquid crystal controlled by the second alignment controller which intersects the first alignment controller is less than 90 degrees. 
     
     
       4. A liquid crystal display device according to  claim 1 , wherein an angular difference between an alignment direction of the liquid crystal controlled by the first alignment controller and an alignment direction of the liquid crystal controlled by the third alignment controller which intersects the first alignment controller is less than 90 degrees. 
     
     
       5. A liquid crystal display device according to  claim 1 , wherein the pixel electrode is formed in an individual pattern for each pixel, and has a chevron shape. 
     
     
       6. A liquid crystal display device comprising:
 a plurality of pixels; and 
 vertical alignment liquid crystal which is sealed between a first substrate having a pixel electrode and a second substrate having a common electrode, wherein the pixel electrode has a linear edge; 
 each pixel region comprises an alignment controller which divides an alignment direction of the liquid crystal within the pixel region on at least one of the sides of the first substrate and the second substrate; 
 the alignment controller comprises a first alignment controller which is formed to be bent in a V-shape within the pixel region; and a second alignment controller and a third alignment controller which are formed on a line passing through a vertex of the V-shape of the first alignment controller, and extending in a direction parallel to the linear edge of the pixel electrode; 
 the second alignment controller and the third alignment controller are formed on opposite sides with the first alignment controller interposed therebetween; 
 the liquid crystal on the side where the second alignment controller is located with respect to the first alignment controller is controlled by the first alignment controller and the second alignment controller; 
 the liquid crystal on the side where the third alignment controller is located with respect to the first alignment controller is controlled by the first alignment controller and the third alignment controller; 
 each of the pixels includes a reflective region and a transmissive region, the reflective region including a gap adjusting section; and 
 the first alignment controller, bent in the V-shape, is located at a boundary between the reflective region and the transmissive region and is formed of an inclined end of the gap adjusting section. 
 
     
     
       7. A liquid crystal display device according to  claim 6 , wherein at least one of the second alignment controller and the third alignment controller is formed at a position dividing a region surrounded by the first alignment controller and the edge of the pixel electrode into equal parts. 
     
     
       8. A liquid crystal display device according to  claim 6 , wherein an angular difference between an alignment direction of the liquid crystal controlled by the first alignment controller and an alignment direction of the liquid crystal controlled by the second alignment controller which intersects the first alignment controller is less than 90 degrees. 
     
     
       9. A liquid crystal display device according to  claim 6 , wherein an angular difference between an alignment direction of the liquid crystal controlled by the first alignment controller and an alignment direction of the liquid crystal controlled by the third alignment controller which intersects the first alignment controller is less than 90 degrees. 
     
     
       10. A liquid crystal display device according to  claim 6 , wherein the pixel electrode is formed in an individual pattern for each pixel, and has a chevron shape. 
     
     
       11. A liquid crystal display device comprising:
 a plurality of pixels; and 
 vertical alignment liquid crystal which is sealed between a first substrate having a pixel electrode and a second substrate having a common electrode, wherein 
 each pixel region comprises an alignment controller which divides an alignment direction of the liquid crystal within the pixel region on at least one of the sides of the first substrate and the second substrate; 
 the alignment controller comprises a first alignment controller which is formed to be bent in a V-shape within the pixel region; and a second alignment controller and a third alignment controller which are formed on a line passing through a vertex of the V-shape of the first alignment controller, and dividing a region surrounded by the first alignment controller and an edge of the pixel electrode into equal parts; 
 the second alignment controller and the third alignment controller are formed on opposite sides with the vertex of the V-shape of the first alignment controller interposed therebetween; 
 the liquid crystal on the side where the second alignment controller is located with respect to the first alignment controller is controlled by the first alignment controller and the second alignment controller; 
 the liquid crystal on the side where the third alignment controller is located with respect to the first alignment controller is controlled by the first alignment controller and the third alignment controller; and 
 each of the pixels includes a reflective region and a transmissive region, the reflective region including a gap adjusting section; and 
 the first alignment controller, bent in the V-shape, is located at a boundary between the reflective region and the transmissive region and is formed of an inclined end of the gap adjusting section. 
 
     
     
       12. A liquid crystal display device according to  claim 11 , wherein the first alignment controller has a portion parallel to the edge of the pixel electrode. 
     
     
       13. A liquid crystal display device according to  claim 11 , wherein an angular difference between an alignment direction of the liquid crystal controlled by the first alignment controller and an alignment direction of the liquid crystal controlled by the second alignment controller which intersects the first alignment controller is less than 90 degrees. 
     
     
       14. A liquid crystal display device according to  claim 11 , wherein an angular difference between an alignment direction of the liquid crystal controlled by the first alignment controller and an alignment direction of the liquid crystal controlled by the third alignment controller which intersects the first alignment controller is less than 90 degrees. 
     
     
       15. A liquid crystal display device according to  claim 11 , wherein the pixel electrode is formed in an individual pattern for each pixel, and has a chevron shape.